Half to frank dydrick



(No Model.)

A. KRANZBR.

TUBE GUTTER.

WIT/VESSES:

UNITED STATES PATENT OFFICE.

ANTON KRANZER, OF LIDGERVOOD, NORTH DAKOTA, ASSIGNOR OF ONE- HALF TOFRANK DYDRICK, OF SAME PLACE.

TU BE-CUTTER.

SPECIFICATION forming part of Letters Patent No. 560,099, dated May 12,1896.

Application filed February 11, 1896. Serial No. 578,920. (No model.)

To all whom it may concern.-

Beit known that I, ANTON KRANZER, of Lidgerwood, in the county ofRichland and State of North Dakota, have invented a new and ImprovedTube-Cutter, of which the following is a full, clear, and exactdescription.

The object of the invention is to provide a new an d improved tube andline cutter which is simple and durable in construction and arranged forconveniently cutting tlues and tubes of diierent diameters.

The invention consists principally of cuttingdisk carriers held in alongitudinallyadjustable tapering mandrel and a revoluble aperturedeasing in which the said carriers are fitted to slide laterally.

The invention also consists of certain parts and details andcombinations of the same, as will be fully described hereinafter, andthen pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specilication, in which similar characters ofreference indicatecorresponding parts in all the figures.

Figure l is a sectional side elevation of the improvement. Fig. 2 is anend elevation of the casing-head. Fig. 3 is a transverse section of theimprovement on the line 3 3 of Fig. l. Fig. a is a face view of thecrankarm; and Fig. 5 is a reduced plan view of the casing, showing theextension-tubes.

The improved tube-cutter is provided with a cylindrical casin g A,formed at its inner end with a head A', provided in its face with anannular ratchet-face A2, engaged by springpressed pins B, held in thehub O of a crankarm C', mounted to turn with its hub on the reduced endA2, projecting forwardly from the head A. The crank-arm hub C is engagedby rings D, pressed on by a spring E, held in a cap F, screwing on theouter threaded end of the reduced portion A3 of the casing, so that thespring-pressed pins B readily engage the ratchet-wheel A2 on the forwardmovement of the crank-arm C to turn the casing and to permit said pinsto readily glide over the teeth of the ratchet -wheel on the returnstroke of the crank-arm.

On the inside of the casing A are formed longitudinally-extendingguideways A4, engaging corresponding recesses formed in a mandrel G,itted to slide longitudinally in said casing, and provided in itstapering surface with longitudinally-extending dovetailed grooves, inwhich iit the dovetails of the carriers H, in which the revoluble diskcutters I are j ournaled. The carriers H each extend through an openingA5 in the wall of the casing A, so that the cutting edge of a cutter isadapted to engage the inside of the ilue or tube to be cut, said cutterbeing fed laterally by the operator moving the mandrel G inwardly in alongitudinal direction on screwing up a screw-rod J, screwing in thethreaded end of the cap F. The guideways A4 serve to take the lateralstrain from the carriers when the casing is turned, so as to permit thecarriers to move freely along the grooves. By this arrangement it ismade possible to readily actuate the feed devices while the casing isbeing turned in cutting a tube.

The inner end of the screw-rod J is mounted to turn in the base of themandrel G, and the outer end of said screw-rod is provided with asuitable handle J', adapted to be taken hold of by the operator to turnthe said screw-rod and feed the mandrel G inward or outward, as the casemay be.

When it is desired to use the instrument for tubes of a diameterconsiderably larger than the diameter of the casing A, then I employcarriers H, of greater depth, and I also employ a casing-tube K, adaptedto slide on the casingA, formed with openings K2, registering with theopenings A5, and the carriers H, of increased depth, extend through theregistering openings A5 and K2 to bring the cutters I in engagement withthe inner surface of the tube or flue to be cut. For still larger tubesor iiues I slip a second casingtube K' upon the tube K, and thiscasing-tube is likewise provided with openings K3, adapted to registerwith the openings K2 and A5. Another set of carriers H, of still greaterdepth, is now employed, so that the carrier extends through theregistering openings in the casing A and tubes K K to bring the cuttersI in engagement with the inner surface of the tube or flue.

In order to hold the casing-tubes K and K in place, I engage the innerends thereof with a collar L, slipped on the inner end of the IOO casingA, and this collar is held in place by a cap N, screwing on the threadedinner end of the casing. A lianged collar O is also slipped on thecasing A, and larger collars are slipped on the casing-tubes K K toengage the outer edge of the flue or tube to be cut, as will be readilyunderstood by reference to Fig. l. Now it Will be seen that when theseveral parts are in the position illustrated in Fig. l and the operatormanipulates the crank-arm handle C, then a rotary motion is given to thecasing A, so that the cutters I cut the tube or flue from the inside,said cutters being fed laterally by shifting the mandrel G inwardly fromtime to time by the operator turning the feed screw-rod J.

It Will be seen that this device is very simple and durable inconstruction, canbe readily manipulated, and conveniently changed forcutting tubes and iiues of different diameters.

Having thus fully described my invention, I claim as new an d desire tosecure by Letters Patentl. A tube-cu tter comprising a revoluble casing,a ratchet device for turning the same, carriers fitted to slide in theWall of said casing and cach carrying a disk cutter, a tapering mandrelengaging said carriers for shifting the same laterally, and a feed-serevrod engaging said mandrel for shifting the latter longitudinallyT insaid casing, substantially as shown and described.

2. A tube-cutter comprising a revoluble casing, carriers iitted to slidein the Wall of said casing and each carrying a disk cutter, a taperingmandrel engaging said carriers for shifting the same laterally, afeed-sereT rod engaging said mandrel for shifting the latterlongitudinally in said casing, and auxiliary casing-tubes adapted tobefitted on said casing and having apertures registering with thecasing-apertures for the carriers, substantially as shown and described.

3. A tube-cutter comprising a revoluble casing, carriers fitted to slidein the Wall of said casing and each carrying a disk cutter, a taperingmandrel engaging said carriers for shifting the same laterally, afeed-screw rod engaging said mandrel for shifting the latterlongitudinally in said casing, auxiliary casing-tubes adapted to befitted on said casing and having apertures registering With thecasing-apertures for the carriers, and means for holding said auxiliarycasing-tubes in place, as set forth.

4. A tube-cutter comprisin g a casing having a head formed with aratchet-Wheel, a crankarm mounted to turn on the reduced end of saidhead and carrying spring-pressed pins engaging said ratchet-Wheel, and aspring held in a cap for said casin g and pressing said crank-arm, so asto hold the pins in contact with the ratchet-Wheel,substantially asshown and described.

5. A tube-cutter comprising a casing formed With apertures in its Walland having longitudinal guideways at its inner surfaces, a taperingmandrel fitted to slide on said guide- Ways and formed Withlongitudinally-extending dovetailed grooves, a feed-screw rod for movingsaid mandrel longitudinally in said guideways, and cutter-carriershaving dovetails fitting the said grooves of the mandrel, substantiallyas shown and described.

G. A tube-cutter, comprising a revoluble casing having longitudinalguideways, carriers fitted to slide in the Walls of the casing and eachcarrying a cutter, a tapering mandrel engaging the carriers for shiftingthe same, said mandrel being guided by engagement with the guideways inthe casing, and a feedscrew for moving the mandrel longitudinally in thecasing, substantially as set forth.

7. Atube-cutter, comprising a casing having an aperture, carriers fittedto slide in the aperture of the casin g and provided Withcutters, atapering mandrel in the casing in engagement With the carriers, forshiftin g the same, a feed-screw for moving the mandrel, an auxiliarycasing-tube arranged to fit on the casin g and having an apertureregistering with the aperture in the case, and means to secure said tubein place on the casing, substantially as set forth.

S. A tube-cutter, comprising a casing having an aperture, carriersfitted to slide in the aperture of the casing and provided with eutters,a tapering mandrel in the casing in engagement With the carriers, forshifting the same, a feed-screw for moving the mandrel, an auxiliarycasing-tube arranged to fit on the casing and havin g an apertureregistering With the aperture in the case, means to secure said tube inplace on the casing, and a cap screwing on the end of the casing to holdsaid tube in place, substantially as set forth.

ANTQN KRANZER. lVitnesses:

GEORGE WIRTENBERGER, H. M. VIRTENBERGER.

IOO

